Suction nozzle



H. STOCK SUCTION NOZZLE April 29, 1947.

3 Sheets-Sheet 1 Inventor Filed Jan. 13, 1944 ip .1, ,.f,, p I Attorriey;

H. STOCK SUCTION NOZZLE A ril 29, 1947.

Filed Jan. 13, 1944 3 Sheets-Sheet 2 Inventor 5 Sheets-Sheet 5 fizz y 57-00% H. STOCK SUCTION NOZZLE Filed Jan. 13, 1944 April 29, 1947.

Patented Apr. 29, 1947 UNITED STATES PATENT OFFICE SUCTION NOZZLE Harry Stock, Minneapolis, Minn.

Application January 13, 1944, Serial No. 518,153

1 Claim. 1

This invention relates to new and useful improvements in suction apparatus and more particularly to a nozzle for use in loading, unloading and transferring various granular material or material of a pulverized nature such as chemicals.

An important object of the present invention is to provide a suction nozzle constructed in such a manner as to be more positive acting in its suction operation on materials than nozzles heretofore used.

Another important object of the invention is to provide an air inlet for suction nozzles which can be easily controlled by the operator.

Other objects and advantages of the invention will become apparent to the reader of the following description.

I the drawings:

Figure 1 is a side elevational view of the nozzle.

Figure 2 is a top plan view.

Figure 3 is a front end elevational view.

Figure 4 is a rear end elevational View.

Figure 5 is an enlarged fragmentary detailed sectional view taken substantially on the line 55 of Figure 2.

Figure 6 is a fragmentary detailed sectional view2 taken substantially on the line 6-6 of Figure Figure 7 is an elevational View of the shutter air regulator.

Figure 8 is a fragmentary sectional view taken substantially on the line 8-8 of Figure 5.

Figure 9 is a fragmentary detailed sectional view taken substantially on the line 9-9 of Figure 1.

Figure 10 is a fragmentary detailed sectional view taken substantially on the line I U-IQ of Figure 4.

Figure 11 is a fragmentary detailed sectional view through the suction tube.

Referring to the drawings wherein like numerals designate like parts, it can be seen that numeral 5 denotes an elongated section tube slightly flared at its inlet end as at 6. Adjacent this flared end 6, the tube 5 is provided with rectangular-shaped air inlet openings 1.

The tube 5 has a short cylindrical extension 8 at its hose attaching end, this extension 8 being provided with a flanged collar 9 over which a flanged sleeve I is adapted to engage with suitable packing means H interposed between the flanged collar 9 and the flanged sleeve ID. The sleeve 19 is suitably secured to a ring l2 on the. adjacent end of a conduit or hose I3.

A shell 14 encases the major portion of the suction tube 5, one end being restricted as at l5. One side of the shell 14 flares outwardly as at IE to define an air inlet compartment having a rear wall IT. This Wall ll has .an air inlet opening l8 and inwardly of this opening and carried by the side walls of the flared portion N of the shell are substantially inverted V-shaped channeled guides l9 in which move the side edge portions of a flexible shutter 2!], which is made up of a plurality of slats 2! suitably secured to a flexible web 22. Inwardly of the shutter 20 is a foraminous or mesh wall 23.

A boss 24 projects outwardly from the shutter and through the air inlet opening 18 where it is formed with a vertical opening receiving a guide rod 25, the upper end of which is secured to the upper portion of the back wall I! while the lower end is secured as at 26 detachably to the extension 8 of the suction tube 5. A wing headed screw 21 is feedable into the boss 24 and adapted to bite against the rod 25 to hold the shutter 29 in any desired position in order to regulate the amount of air that is to be admitted to the air compartment and the suction tube 5.

A handle 28 is provided on the shell I4. Obviously, the connection shown in Figure 9 permits a swivelled action between the suction tube 5 and the hose coupling [3 so that the nozzle may be ro tated to the extent desired.

While the foregoing specification sets forth the I invention in specific terms, it is to be understood that numerous changes in the shape, size and materials may be resorted to without departing from the spirit and scope of the invention as claimed hereinafter.

Having described the invention, What is claimed as new is:

A suction nozzle comprising a suction tube having an intake end and a discharge end, a she11 encasing said tube and having a portion extending along one side of the tube from said intake to said discharge end and flaring toward said discharge end, said portion having an open rear end to provide an air inlet into said portion, air inlet ports in said tube adjacent to the intake end thereof establishing communication with said tube and said shell, a flexible slat shutter for closing said inlet, channel tracks at opposite edges of said shutter and opposite sides of said inlet within said portion and in which said shutter is slidably mounted for adjustment to open and close the inlet, said tracks being longitudinally V- shaped to cause said shutter when opened to assume a position at an acute angle to the plane of said inlet for accommodation in said portion, and means to secure the shutter in different adjusted positions.

HARRY STOCK.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 530,829 Duckham Dec. 11, 1894 1,144,019 Bacon June 22, 1915 FOREIGN PATENTS Number Country Date 166,628 British July 18, 1921 276,114 German July 4, 1914 

